CN111519785A - Rotary amplification type viscous damping wall - Google Patents

Abstract

The invention discloses a rotary amplification type viscous damping wall, and belongs to the technical field of structural shock absorption. The rotary amplification type viscous damping wall comprises a moving mechanism, a closed box body, a rotating shaft, a large gear, a small gear, a square piston side steel plate, a sliding guide rail, a damping medium, a sealing piece, polytetrafluoroethylene and the like. The action mechanism and the closed box body are constrained by the structural components which are connected up and down and are forced to generate relative dislocation motion, when the action mechanism moves, the external gear of the action mechanism drives the pinion to rotate, so that the rotating shaft is driven to rotate, the large gear in the closed box body rotates along with the pinion, the large gear is meshed with the internal plate gear of the square piston in the square piston, and damping media in the closed box body are forced to pass through the damping holes, so that damping energy consumption is generated. The invention has simple structure, can quickly reduce the vibration response of the structure, and can not influence the use of the building when the structure is arranged because the structure is in a wall type and the thickness of the structure can be the same as that of a partition wall of the building.

Description

Rotary amplification type viscous damping wall

Technical Field

The invention relates to the technical field of structural shock absorption, in particular to a rotary amplification type viscous damping wall.

Background

Earthquakes occur in many countries around the world, and no more important earthquakes, such as the great earthquake in the Tang mountain of China, the great earthquake in the old Jinshan of California, Japan, the great earthquake with the Osaka spirit of Japan, and the like, cause serious influence on the life of people and threaten the safety of lives and properties of people all the time. With the rapid development of the economic level of China, high-rise buildings and some super high-rise special buildings are more and more, and meanwhile, higher requirements are put forward on the safety performance of houses, so that the earthquake-resistant performance of the buildings is particularly important, when an earthquake occurs suddenly, the damping walls can consume earthquake energy to protect beams and columns from being damaged easily, the earthquake-resistant performance of the whole structure is improved, the ductility of the buildings is increased, and the damage of the earthquake to the houses is reduced.

The conventional viscous damping wall consumes seismic energy mainly through the adhesive force generated by the damping medium and the surface of the shear plate. The size of the cohesive force is mainly related to the material of the damping medium, so that the cohesive property of the material of the damping medium directly influences the energy consumption property of the damping wall, the traditional viscous damping wall is characterized in that the damping medium with higher viscosity is added into the wall, a shear plate is inserted into the wall, the upper end of the shear plate is connected with an upper structure beam of the wall, when an earthquake occurs, the shear plate is forced to move left and right in the wall filled with the damping medium by the movement of the upper structure beam, and therefore the viscous force generated on the surfaces of the damping medium and the shear plate can consume the earthquake energy and can reduce the damage of the earthquake to the structure. However, the method has the defects that firstly, the damping force of the damping wall is generated by the adhesive force between the damping medium and the surface of the shear plate, the generated damping force is insufficient under the action of a large earthquake, the pressure in the container is not high, the earthquake energy consumption effect is not obvious, the contact surface between the shear plate and the upper end of the wall body is rectangular, the circular hole is easy to seal at present, the rectangular contact surface is difficult to seal and is not good to treat, the damping medium overflows, the adhesive force generated between the surface of the shear plate and the damping medium is greatly influenced, and the earthquake energy consumption performance is influenced.

CN109594684A patent of "a high pressure transmission type viscous damping wall" describes a damping wall, which comprises a closed box, a moving mechanism, an end shear plate, an internal shear plate, a rotating shaft, a damping hole, a guide rail, etc., wherein the closed box is embedded with the moving mechanism, the moving mechanism is connected with an upper structural beam, the damping wall mainly depends on the left and right movement of the internal shear plate and the end shear plate in the closed box, and damping media generate damping force through the damping hole of the internal shear plate and the end shear plate to consume seismic energy. However, under the action of a large shock, the damping force generated by damping media passing through the damping holes of the end shear plates and the internal shear plates is insufficient, and the end shear plates and the internal shear plates are more in number and damping holes, so that the manufacture is difficult. The device has disadvantages in structure and design. But these weak points have effectively been solved to rotatory formula of enlargiing viscous damping wall, the rotation axis is equipped with the gear wheel in sealed box inside, be equipped with the pinion in sealed box outside, gear wheel radius on the rotation axis will be bigger than pinion radius, when the rotation axis rotates, the linear displacement that the gear wheel produced under the same angular velocity is bigger, plays the amplification effect, can produce bigger damping force, and the damping medium passes through the damping hole and can produce the efflux in addition, can increase damping force to there is not the shear plate in the square piston, it is more convenient to make. Therefore, the rotary amplification type viscous damping wall can generate larger damping force, so that the earthquake input energy is more effectively reduced.

Disclosure of Invention

In order to solve the technical problems, the invention provides the rotary amplification type viscous damping wall which is simple in structure and can increase damping force, the effect of consuming seismic energy can be increased, and the seismic resistance and ductility of the structure are improved. According to the invention, the damping medium flows and is sprayed from the damping holes between the square piston steel plates on the two sides, the whole closed box body is filled with the damping medium, and when the damping medium moves, high pressure can be generated in the closed box body, so that a larger damping force is generated, and the effects of energy dissipation and shock absorption are achieved.

The utility model provides a viscous damping wall of rotatory amplification formula, its includes the gear wheel, the pinion, the damping medium, the damping hole, square piston side steel sheet, sliding guide, the closed box, polytetrafluoroethylene, the running gear, square piston inner panel, the rotation axis, square piston inner panel gear, the sealing member, the running gear outer gear, square piston top steel sheet, square piston bottom steel sheet, the oil filler point, the exhaust hole, its characterized in that: the upper end of the action mechanism is connected with the bottom of the structural beam, the lower end of the action mechanism is provided with an action mechanism outer gear which is meshed with a pinion on a rotating shaft, when the action mechanism moves horizontally relative to the closed box, the rotating shaft is driven to rotate, a square piston side steel plate is welded with a square piston inner plate, a square piston inner plate gear on the square piston inner plate is meshed with a bull gear, when the bull gear rotates, the square piston is driven to move horizontally, damping holes are formed between the square piston side steel plates, damping media in the closed box are forced to flow and spray from the damping holes, and the sliding guide rail is connected with the square piston.

The upper part of the action mechanism is connected with the bottom of the structural beam and is used for preventing the action mechanism from falling off the closed box body and ensuring that the action mechanism can move along the horizontal direction. The lower surface of the action mechanism is provided with an action mechanism external gear, and the action mechanism external gear is meshed with the pinion on the rotating shaft, and the action mechanism is prevented from moving up and down. The top plate of the closed box body is placed on the step of the action mechanism, and the polytetrafluoroethylene is arranged on the plane and the side contact surface, so that the friction between the closed box body and the action mechanism is reduced. The upper part of the closed box body is connected with the variable cross section of the action mechanism, when the action mechanism moves, the rotating shaft rotates, and the rotation of the rotating shaft drives the square piston to move only along the horizontal direction. The rotating shaft penetrates through the closed box body and is a solid or hollow steel round pipe, the rotating shaft is provided with a large gear inside the closed box body, a small gear is arranged outside the closed box body, the radius of the large gear on the rotating shaft is obviously larger than that of the small gear, and the linear displacement generated by the large gear at the same angular speed is larger when the rotating shaft rotates, so that the linear displacement plays an amplifying role and can generate larger damping force. The rotary shaft is provided with a smooth round section at the side wall of the closed box body, the function of the rotary shaft is that the sealing of the round section is easy to process, and a sealing piece can be arranged at the position to prevent the damping medium in the closed box body from overflowing. The square piston comprises a square piston side steel plate, a square piston top steel plate, a square piston bottom steel plate, a damping hole, a rotating shaft and a square piston inner plate, a certain gap is reserved between the square piston side steel plate and the inner wall of the closed box, a certain gap is reserved between the square piston top steel plate and the inner wall of the closed box, polytetrafluoroethylene is arranged between the tops of the square piston top steel plate and the inner wall of the closed box, and the square piston side steel plate and the inner wall of the closed box are used for reducing friction between the tops of the square piston and the inner wall of the closed box. The polytetrafluoroethylene is arranged between the steel plate at the bottom of the closed box body and the guide rail and is used for reducing friction between the square piston and the guide rail in the movement process. Set up a plurality of damping round hole between square piston side steel sheet, the damping medium is silicon oil, and is full of whole closed box, square piston top steel sheet is very little with the top space on the closed box inner wall, and its effect is flowed through from square piston top for preventing to seal the inside damping medium of box, makes the damping medium in the closed box flow from the damping hole as far as possible and sprays, produces the efflux, thereby produce the damping force, the inside pressure of closed box can increase moreover, can increase the damping force. The big gear on the rotating shaft in the closed box body is meshed with the square piston inner plate gear on the square piston inner plate, and the square piston only moves along the horizontal direction. Set up spill sliding guide at sealed bottom of the case body, spill sliding guide welds with sealed box, gear wheel and the meshing of square piston inner panel gear, sliding guide's lateral wall blocks square piston, and its effect is when the rotation axis rotates, can make square piston can not remove about, only can move along the horizontal direction.

After the structure is adopted, the upper end of the action mechanism is connected with the bottom of the structural beam, the lower end of the closed box body is connected with the upper part of the structural beam, and relative dislocation motion is forced to occur under the action of earthquake because of being restrained by the structural members which are connected up and down. The external gear of the action mechanism drives the pinion to rotate, so that the rotating shaft is driven to rotate, and the large gear on the rotating shaft in the closed box body is meshed with the gear on the square piston inner plate in the square piston inner plate, so that the square piston moves in the closed box body in the horizontal direction. A gap is reserved between the square piston and the upper top of the inner wall of the closed box body, and polytetrafluoroethylene is arranged between the square piston and the upper top of the inner wall of the closed box body, so that friction between the square piston and the upper top of the inner wall of the closed box body is reduced. Set up a plurality of damping holes between the square piston side steel sheet, can make the damping medium in the closed box flow from the damping hole is preferential like this, produce and spray to produce damping force, closed box inside pressure can increase moreover, can produce bigger damping force. The concave sliding guide rail is arranged at the bottom of the closed box body, the side wall of the sliding guide rail clamps the square piston, and the large gear is meshed with the inner plate gear of the square piston, so that the square piston can only move along the horizontal direction. The bottom of the sliding guide rail is welded with the closed box body.

In addition, the invention has simple structure, can quickly reduce the vibration response of the structure, and can not influence the use of the building when the structure is arranged because the shape is wall type and the thickness can be the same as the partition wall of the building. The rotary amplification type viscous damping wall is easy to seal and treat, can generate larger damping force, has better damping effect, higher safety factor and high structural durability, and can be used for a long time.

The working process of the rotary amplification type viscous damping wall is as follows:

when earthquake happens, the action mechanism 9 is constrained by the structural components which are connected up and down, and is forced to generate relative movement in a staggered manner, so as to drive the rotating shaft 11 to rotate, the gearwheel 1 is meshed with the internal plate gear 12 of the square piston in the square piston, so that the square piston 15 moves along the horizontal direction, because the gap between the square piston 15 and the top part of the inner wall of the closed box body 7 is small, the damping hole 4 is arranged between the side steel plates 5 of the square piston, the aperture is large, the number is large, therefore, the damping medium 3 in the closed box body 7 can preferentially flow into the damping hole 4 to be sprayed, jet flow is generated, so as to generate damping force, because the damping medium 3 fills the whole closed box body 7, when the square piston 15 moves in the closed box body 7, the pressure of fluid of a compressed cavity is increased, the damping medium 3 is forced to flow from the damping hole 4, so as to generate larger damping force, because the square piston 15 is clamped on two sides of the sliding guide rail 6, the large gear 1 is meshed with the inner plate gear 12 of the square piston in the square piston, and the square piston 15 is ensured to move only along the horizontal direction.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an overall rotary and enlarged viscous damping wall;

FIG. 2 is a schematic view of the direction of movement of the damping medium;

FIG. 3 is a schematic view of the moving direction of the mobile structure;

FIG. 4 is a schematic view of the mobile structure and the closed box body;

FIG. 5 is a schematic view of the movement of the shear plate inside the case;

FIG. 6 is a cross-sectional view of the guide rail;

FIG. 7 is a schematic view of a seal at the interface of the rotating shaft and the housing;

FIG. 8 is a schematic view of a guide rail;

FIG. 9 is a schematic view of the oil filler hole and the air vent hole;

FIG. 10 is a schematic view of the rotating shaft and gears;

FIG. 11 is a schematic view of a damping orifice;

FIG. 12 is a schematic view of a square piston;

in FIGS. 1 to 12, 1 is a bull gear; 2 is a pinion; 3 is a damping medium; 4 is a damping hole; 5 is a square piston side steel plate; 6 is a sliding guide rail; 7 is a closed box body; 8 is polytetrafluoroethylene; 9 is a moving mechanism; 10 is a square inner piston plate; 11 is a rotating shaft; 12 is a square piston inner plate gear; 13 is a sealing member; 14 is a moving mechanism external gear; 15 is a square piston; 16 is a square piston top steel plate; 17 is a square piston bottom steel plate; 18 is an oil hole; and 19 is an exhaust hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic view showing the overall structure of a rotary amplification type viscous damping wall according to the present invention. As shown in FIG. 1, the rotary amplified viscous damping wall mainly comprises a large gear 1, a small gear 2, a square piston side steel plate 5, a sliding guide rail 6, a closed box 7, a moving mechanism 9, a square piston inner plate 10, a rotating shaft 11, a square piston inner plate gear 12, a moving mechanism outer gear 14, a square piston 15, a square piston top steel plate 16, a square piston bottom steel plate 17 and the like, wherein the closed box 7 is filled with a damping medium 3, and the large gear 1 can drive the square piston inner plate gear 12 in the square piston to rotate, so that the square piston 15 moves back and forth along the horizontal direction, aiming at the problems that the prior viscous damping walls lack high pressure, the sealing of non-circular holes is difficult to process, and once the damping medium overflows, the damping force can be reduced and the safety of engineering structures is greatly influenced, the invention provides an improvement method for the rotary amplified viscous damping wall, in order to realize sealed easy processing, produce bigger damping force in the box, its construction steps are as follows: (1) the action mechanism 9 is prefabricated in a factory, polytetrafluoroethylene 8 is adhered to the upper surfaces of steps on two side plates of the action mechanism, and the lower end of the action mechanism is manufactured to form an action mechanism external gear 14. (2) Six steel plates are prepared in advance, and damping holes 4 are reserved in the steel plates on two sides. Holes (3) are reserved on the surfaces of front and rear side steel plates to weld a square piston inner plate gear 12 in a square piston and a square piston side steel plate 5 into a whole, a damping hole 4 and the square piston side steel plate 5 are welded into a whole, and polytetrafluoroethylene 8 is adhered to the surface of a square piston top steel plate. (4) And (3) welding the large gear 1 and the small gear 2 with the rotating shaft 11, penetrating the large gear and the small gear into the reserved hole of the side plate in the step (2), welding the upper, lower, left and right steel plates and the front steel plate, and temporarily keeping the rear steel plate unwelded. (5) Welding the prefabricated sliding guide rail 6 with the closed box body, penetrating the other side plate which is kept temporarily through the other side of the rotating shaft 11, correcting the position, and finally welding the steel plate at the rear side which is kept temporarily with the other five steel plates into a whole. (6) The damping medium 3 is filled through the oil filling holes 18, and after the gas is discharged, all the oil filling holes 18 and the exhaust holes 19 are sealed by plugs. (7) The prefabricated running gear 9 and the closed box body 7 are embedded into a whole.

It will be readily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and other damper walls may be equally applied, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides a viscous damping wall of rotatory amplification formula, it includes gear wheel (1), pinion (2), damping medium (3), damping hole (4), square piston side steel sheet (5), sliding guide (6), closed box (7), polytetrafluoroethylene (8), running gear (9), square piston inner panel (10), rotation axis (11), square piston inner panel gear (12), sealing member (13), running gear outer gear (14), square piston (15), square piston top steel sheet (16), square piston bottom steel sheet (17), oil filler point (18), exhaust hole (19), its characterized in that: the upper end of a moving mechanism (9) is connected with the bottom of a structural beam, an outer moving mechanism gear (14) is arranged at the lower end of the moving mechanism (9) and is meshed with a pinion (2) on a rotating shaft (11), when the moving mechanism (9) moves horizontally relative to a closed box body (7), the rotating shaft (11) is driven to rotate, square piston side steel plates (5) are welded with square piston inner plates (10), square piston inner plate gears (12) on the square piston inner plates (10) are meshed with a large gear (1), the large gear (1) drives a square piston (15) to move horizontally when rotating, damping holes (4) are formed between the square piston side steel plates (5), damping media (3) in the closed box body (7) are forced to flow and jet from the damping holes (4), and a sliding guide rail (6) is connected with the square piston (15).

2. A rotary amplified viscous damping wall according to claim 1, characterized in that: the upper part of the action mechanism (9) is connected with the bottom of the structural beam, the lower part of the action mechanism is provided with an action mechanism external gear (14), and the action mechanism external gear (14) is meshed with the pinion (2) on the rotating shaft (11).

3. A rotary amplified viscous damping wall according to claim 1, characterized in that: the upper top plate of the closed box body (7) is placed on the step of the action mechanism (9), and polytetrafluoroethylene (8) is arranged on the plane and the side contact surface of the place where the top plate is placed.

4. A rotary amplified viscous damping wall according to claim 1, characterized in that: the rotary shaft (11) penetrates through the closed box body (7) and is a solid or hollow steel round pipe, the radius of the rotary shaft (11) in the closed box body (7) is obviously larger than that of the rotary shaft in the outside, the rotary shaft (11) is provided with a large gear (1) in the closed box body (7), a small gear (2) is arranged outside the closed box body (7), the rotary shaft (11) is provided with a smooth round section in the side wall of the closed box body (7), and a sealing piece (13) is arranged in the section.

5. A rotary amplified viscous damping wall according to claim 1, characterized in that: the square piston (15) comprises square piston side steel plates (5), square piston top steel plates (16), square piston bottom steel plates (17), damping holes (4), a rotating shaft (11) and square piston inner plates (10), the damping holes (4) are arranged between the square piston side steel plates (5), square piston inner plate gears (12) are arranged on the upper surfaces of the square piston inner plates (10), and the square piston inner plate gears (12) are meshed with the large gears (1).

6. A rotary amplified viscous damping wall according to claim 1, characterized in that: the bottom of the sliding guide rail (6) is fixed at the lower end of the closed box body (7), and the top of the sliding guide rail is connected with the square piston (15).

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